---
title: "Discussion on \"M Language from Scratch in Power Query for Power BI\" | Hashnode"
description: "Discussion on \"M Language from Scratch in Power Query for Power BI\". What is Power Query?\nPower Query is Power BI’s data preparation layer. It lets you connect, clean, and reshape data from Excel, SQL, CSVs, folders, web APIs, and more—before analysis. You build steps once, and Power Query repeats them on every refres..."
url: "https://hashnode.com/posts/m-language-from-scratch-in-power-query-for-power-bi/68e9d168baf2d41b28e7fa3a"
---

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# [M Language from Scratch in Power Query for Power BI](https://datascienceexplanations.hashnode.dev/m-language-from-scratch-in-power-query-for-power-bi?utm_source=hashnode&utm_medium=feed)

What is Power Query? Power Query is Power BI’s data preparation layer. It lets you connect, clean, and reshape data from Excel, SQL, CSVs, folders, web APIs, and more—before analysis. You build steps once, and Power Query repeats them on every refres...

Oct 11, 2025 · 31 min read · datascienceexplanations.hashnode.dev  
Updated Jan 14  
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[lorenzo nicholas](https://hashnode.com/@lorenzonicholas)

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